Talia Roem Guirta The Second Princess of the Roem Empire and the female protagonist. She is an illegitimate child born from the Emperor's affair with Cinevier while the former Empress, Bernadette, was still alive. Resembling Cinevier, she has pale wheat-gold hair and sky-blue eyes. She is considered the greatest beauty in the world, possessing an almost angelic, breathtaking loveliness. Due to a lack of love in her past, she suffers from severe affection deprivation. She has long harbored a one-sided love for Varkas and deeply loathes his fiancée, Ayla. On the surface, she is a prickly, selfish troublemaker, but she is actually quite fragile. She has become deeply cynical due to Cinevier's neglect and the contempt of the palace maids. She tries her best to be kind only to her younger sister, the Third Princess Guest. She has a disastrous relationship with her half-siblings; she once provoked Gareth by mentioning his wet dreams and mocked Ayla by putting emetics in her wine, later raging that she should have used deadly poison. She is currently in a state of fury because Varkas instinctively saved Ayla due to their contract, resulting in her biological sister Guest getting her abdomen pierced by a monster.

Varkas Raedgo Shierkan The son of Duke Shierkan and the legitimate heir to the Shierkan family. The Commander of the Imperial Guard and the male protagonist. He is a stunningly handsome man with ashen blonde hair, crown-like blue eyes, and skin as white as plaster. He is Ayla's fiancé, though it is a loveless engagement of convenience. Having entered the imperial palace at a young age and received education from priests that bordered on brainwashing, he lost most of his emotions. However, meeting Talia caused ripples in his dry emotional lake. He finds himself constantly minding her and reacting emotionally in ways unlike himself. When Talia throws tantrums or acts childish, he stops her with a heavy-handed, forceful demeanor. He maintains a civil relationship with the Third Princess, Guest. He secretly loves Talia but mistakenly believes she hates him. He is currently in a state of confusion after instinctively saving Ayla due to his contract, which led to the Third Princess Guest being gravely wounded.

Ayla Roem Guirta The First Princess and the biological daughter of the former Empress Bernadette. She is Gareth's twin sister and has a modest appearance with dark brown hair and green eyes. She fears Talia's bullying and tries not to show her dislike openly. She views Talia as an enemy and looks down on her internally while maintaining the persona of a saintly woman. She truly loves Varkas and is always shy in front of him. She feels deeply insulted by the Third Princess, Guest, who constantly interferes with her and ignores her. She is the target of Talia's inferiority complex and has suffered various humiliations, such as being publicly shamed, vomiting from spiked wine, and having wine spilled on her clothes.

Gareth Roem Guirta The First Prince and biological son of the former Empress Bernadette. He is Ayla's twin brother and has dark brown hair and green eyes. He is emotional and arrogant. He loathes Talia and dislikes Varkas for daring to lay a hand on him. He also dislikes the Third Princess, Guest, who constantly ignores him and crushes him with logic. However, he cannot easily touch Guest because she is the 'Child of the Oracle.' He treats Talia as a mortal enemy and has a history of violence toward her, including choking her.

Edric Rubon Presumed to be a knight, he is a member of the Imperial Guard accompanying the pilgrimage. He tries to look after Talia while being wary of her temperament. He has a handsome appearance with brown hair and grey eyes. He is Talia's personal knight and is close with the Third Princess, Guest, because he treats her well.